A new sponge associated shrimp species of the Indo-West Pacific genus Paraclimenaeus (Decapoda, Caridea, Palaemonidae)

in Crustaceana
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A new sponge-associated species, Paraclimenaeus michaeli sp. nov. from Sulawesi, Indonesia, and Singapore, is described and illustrated. The new species can be distinguished from its congenerics by: (1) the downwards curved rostrum with 2 acute dorsal teeth subdistally, (2) the absence of subdistal teeth on the fixed finger of the major second chela, (3) the pairs of dorsal telson spines at about 0.33 and 0.66 of the telson length, (4) the caudal fan sparsely setose, and (5) the second pereiopods without subdistal teeth on fixed finger. To evaluate its relationship with congenerics and species of the related genera Apopontonia and Climeniperaeus, a phylogenetic analysis based on the 16S mitochondrial gene is presented. A key for the identification of the species in Apopontonia, Climeniperaeus and Paraclimenaeus is proposed.

A new sponge associated shrimp species of the Indo-West Pacific genus Paraclimenaeus (Decapoda, Caridea, Palaemonidae)

in Crustaceana

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References

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Figures

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    Paraclimenaeus michaeli sp. nov., female holotype, MZB Cru 4603. Scale = 1 mm.

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    Paraclimenaeus michaeli sp. nov., female holotype, MZB Cru 4603. A, anterior appendages, dorsal view; B, idem, lateral view; C, telson, dorsal view; D, idem, tip; E, uropod. Scale; A, B = 1 mm; C, E = 0.5 mm; D = 0.16 mm.

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    Paraclimenaeus michaeli sp. nov., female holotype, MZB Cru 4603. A, antennula; B, antenna, ventral view; C, mandibula; D, maxillula; E, maxilla; F, first maxilliped; G, second maxilliped; H, third maxilliped. Scale: A, B = 0.5 mm; C-H = 0.25 mm.

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    Paraclimenaeus michaeli sp. nov., female holotype, MZB Cru 4603. A, first pereiopod; B, major second chela; C, idem, fingers; D, minor second chela; E, idem, fingers. Scale: A, C, E = 0.5 mm; B, D = 0.25 mm.

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    Paraclimenaeus michaeli sp. nov., female holotype, MZB Cru 4603. A, left third pereiopod; B, idem, dactylus; C, left fourth pereiopod; D, idem, dactylus; E, left fifth pereiopod; F, idem, dactylus. Scale: A, C, E = 0.5 mm; B, D, F = 0.16 mm.

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    Paraclimenaeus michaeli sp. nov., female holotype, MZB Cru 4603. A, first pleopod; B, second pleopod. Male paratype, pocl. 1.6 mm, RMNH.CRUS.D.50209. C, left first pleopod; D, left second pleopod. Scale: 0.25 mm.

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    Bayesian Inference (BI) tree with mean branch lengths of the 16S dataset. Confidence values at the nodes were obtained from 1000 bootstrap replicates of ML trees (first number) and Bayesian Inference (BI) (second number). Only values above 50% are indicated. Scale bar indicates genetic distance. Numbers in front of names refer to RMNH.CRUS.D collection registration numbers of voucher specimens.

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